A person allergic to chocolate is likely to develop a migraine because:

A. histamine dilates cerebral blood vessels, which stimulates nearby pain receptors.
B. histamine constricts cerebral blood vessels, which stimulates pain receptors.
C. IgE constricts cerebral blood vessels, which stimulates pain receptors.
D. IgE dilates cerebral blood vessels, which stimulates nearby pain receptors.


Answer: A

Nursing

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